Honestly, and this will sound weird, but 99% of the reason I don't bake is because the process and seeing all the unmade ingredients and knowing that that's what's inside your food grosses me out.

I helped my mom bake cakes a couple of times as a kid and then I could never eat the finished product because everything that went into it smelled and looked really funny

For me it's a matter of what you don't know can't hurt you. I don't like to know how my food is made. xD